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Orion

Lustre HPE ClusterStor Filesystem

The Orion I/O subsystem from HPE was brought online in 2022 to support Frontier and the OLCF. The I/O subsystem features an in-system storage layer and ORION, a Lustre-based enhanced center-wide file system.

Orion consists of 50 total cabinets with capacity for up to 700 petabytes of data spread across a three-tiered system of flash memory, spinning disk drives and other nonvolatile media that relies on open-source Lustre and ZFS technologies.

The in-system storage layer will employ compute-node local storage devices connected via PCIe Gen4 links to provide peak read speeds of more than 75 terabytes per second (TBps), peak write speeds of more than 35 TBps, and more than 15 billion random-read input/output operations per second (IOPS). The Orion center-wide file system will provide around 700 PB of storage capacity and 5 TB/s peak write speeds.

Orion Support

Please visit the Orion System User Guide for more information, or contact the OLCF User Assistance Center by emailing [email protected].

System Specifications

Frontier mounts Orion, a parallel filesystem based on Lustre and HPE ClusterStor, with a 679 PB usable namespace (/lustre/orion/). In addition to Frontier, Orion is available on the OLCF’s data transfer nodes. It is not available from Summit. Files older than 90 days are purged from Orion.Orion is a cluster of servers with approximately 500 nodes. Each node plays a role in providing a POSIX namespace for users (/lustre/orion/). .. A file on Lustre consists of one or more components that may hit one or more servers. Lustre has a distributed lock management process for concurrent access to files or regions within files.Orion has three performance tiers:

  • A flash-based performance tier of 5,400 nonvolatile memory express (NVMe) devices that provides 11.5 petabytes (PB) of capacity at peak read-write speeds of 10 TB/s.
  • A hard-disk-based capacity tier that provides 679 PB at peak read speeds of 5.5 TB/s and peak write speeds of 4.6 TB/s.
  • A flash-based metadata tier of 480 NVMe devices provides an additional capacity of 10 PB.

Latest Orion Highlights

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ADIOS team ORNL

Adaptable IO System Delivers the Data

Amid the challenges that the Department of Energy’s Oak Ridge Leadership Computing Facility faced in assembling and launching the world’s first exascale-class (more than a quintillion calculations per second) supercomputer, Frontier, one key component was hitch-free. Integral to Frontier’s functionality is its ability to store the vast amounts of data…
Coury TurczynCoury TurczynApril 29, 202411 min
Orion

Forging a File System

Imagine solving the greatest scientific question of the era but having no way to save your answer. No need to fear, thanks to Dustin Leverman and his team. Leverman leads the Oak Ridge Leadership Computing Facility’s High-Performance Computing Storage and Archive Group at the U.S. Department of Energy’s Oak Ridge…
Matt LakinMatt LakinMarch 30, 20234 min

Register for Lustre User Group Virtual Conference 2022

Registration is open for the 2022 Lustre User Group (LUG22) conference, "the high-performance computing industry's primary venue for discussion on the open-source Lustre file system and other technologies." The annual conference will welcome experts from the National Center for Computational Sciences (NCCS) and around the world to discuss the latest…
Betsy SonewaldBetsy SonewaldMay 4, 20222 min